The Politics of Autism includes an extensive discussion of insurance and Medicaid services for adults with intellectual and developmental disabilities.
In FY2021, 87% of the total public funding for IDD services was distributed through Medicaid-related services.
As a percentage of each state’s budget, supports for intellectual and developmental disability services make up between less than 1% and up to 6% of any state’s budget, or an average of 2.57%. This is illustrated in the map below.
After Olmstead, funding shifted away from congregate settings:
